Insiders Trading BBY, CPN, NDAQ, PSA

By Jonathan Moreland, founder of Insider Insights and author of Profit From Legal Insider Trading.

NEW YORK ( TheStreet) -- Which insiders are selling and buying chunks of stocks?

Below are lists of the top 10 mainly open-market insider purchases and sales filed at the Securities and Exchange Commission Wednesday, May 23, 2012 as ranked by dollar value. Company executives and directors are in the best position to assess the attractiveness of their firms' shares, and here is how many of them are voting their wallets! Please note, however, that these are factual lists, not buy and sell recommendations. Dollar value is only one metric to assess the importance of an insider transaction.

Best Buy Co (BBY) Mikan George Lawrence III CEO,DIR 100,000 1,823,570
Nasdaq Omx (NDAQ) Investor Ab BO 40,000 876,008
Universal Display (PANL) Discovery Global Opp Fd BO 23,600 648,764
Sturm Ruger & Co (RGR) Cosentino John A Jr DIR 15,000 588,719
Sky Petroleum (SKPI) Jobanputra Karim DIR 2,165,000 524,750
Palomar Medical (PMTI) Broadwood Partners BO 61,200 510,945
Edgen (EDG) Friedman Brian P BO 50,000 376,700
Abercrombie & Fitch (ANF) Stapleton Craig R DIR 10,000 354,295
Qualstar (QBAK) Bkf Capital BO 169,164 332,695
First Opportunity Fund (FOFI) Adams Nicholas C FO 34,225 247,307
Source: Insider Insights
Calpine (CPN) Spo Advisory BO 18,500,000 311,355,008
Public Storage (PSA) Hughes B Wayne Et Al CB 123,328 16,393,131
Charter Communications (CHTR) Oaktree Opp Investments DIR,BO 253,783 16,292,224
Validus Holdings (VR) Singh Alok DIR 201,699 6,366,670
Acacia Research (ACTG) Harris Robert L II CB,DIR 100,000 3,471,700
Endeavour International (END) Steelhead Partners O 294,960 1,940,148
TW Telecom (TWTC) Jones Paul B VP,GC 70,000 1,591,100
Drew Industries (DW) Rose Edward W III DIR 40,000 1,056,200
Mine Safety Appliances (MSA) Shaw L Edward Jr DIR 22,717 952,931
Linkedin (LNKD) Gamson Michael VP,SO 10,000 947,303
Source: Insider Insights

Key to Titles: A=Assistant, AI=Affiliated Investor, AO=Accounting Officer, BD=Business Development, BO=Beneficial Owner, CAO=Chief Accounting Officer, CB=Chairman, CCO=Chief Compliance Officer, CEO=Chief Executive Officer, CFO=Chief Financial Officer, CIO=Chief Information Officer, CO=Compliance Officer, COO=Chief Operating Officer, CT=Controller, CTO=Chief Technology Officer, DIR=Director, EVP=Executive Vice President, F=Founder, FO=Financial Officer, GC=General Counsel, HR=Human Resources, IO=Information Officer, IR=Investor Relations, LO=Legal Officer, MD=Managing Director, O=Officer, OO=Operating Officer, PR=President, PT=Partner, REL=Relative of an insider, SEC=Secretary, SH=Shareholder, SO=Sales Officer, TO=Technology Officer, TR=Treasurer, TT=Trustee, VCB=Vice Chairman, VP=Vice President, X=Ex Officer or other title displayed.
Jonathan Moreland is the founder of, which produces a weekly newsletter and offers professional screening and alerting tools to analyze a proprietary, real-time insider data feed. He is also the principal of Insider Asset Management, a registered investment advisor in New York. Mr. Moreland has been analyzing insider data professionally for two decades and has been a contributor to since 2001. A fundamental analyst with an MBA in finance, Mr. Moreland long ago identified insider data as an excellent first screen to determine where to focus his research efforts. He is quoted frequently in the media for his insider analysis and stock recommendations stemming from it. He is also author of Profit From Legal Insider Trading.

Under no circumstances does the information in this column represent a recommendation to buy or sell stocks. While he cannot provide investment advice or recommendations, Moreland appreciates your feedback; click here to send him an email.